Plantes de Nouvelle‐Calédonie. 94e Communication. Alcaloïdes monoterpéniques de Scaevola racemigera DÄNIKER

Helvetica Chimica Acta
1985.0

Abstract

<jats:p><jats:bold>Monoterpene Alkaloids of <jats:italic>Scaevola racemigera</jats:italic> D<jats:sc>ÄNIKER</jats:sc></jats:bold><jats:p>Nine alkaloids have been isolated from the aerial parts of <jats:italic>Scaevola racemigera</jats:italic>. Two of them are the known compounds cantleyine (<jats:bold>1</jats:bold>) and tetrahydrocantleyine (<jats:bold>2</jats:bold>). The seven others are novel alkaloids, strychnovoline (<jats:bold>3</jats:bold>), 6‐<jats:italic>O</jats:italic>‐nicotinoylstrychnovoline (<jats:bold>4</jats:bold>), 6‐<jats:italic>O</jats:italic>‐nicotinoyltetrahydrocantleyine (<jats:bold>5</jats:bold>), 6‐<jats:italic>O</jats:italic>‐(5‐vinylnicotinoyl)tetrahydrocantleyine (<jats:bold>6</jats:bold>), racemigerine (<jats:bold>7</jats:bold>), 6,7‐epoxyracemigerine (<jats:bold>8</jats:bold>), and scaevoline (<jats:bold>9</jats:bold>). The structures of the new compounds have been elucidated by their spectral data and confirmed by chemical correlations. Moreover, the absolute configuration of <jats:bold>2</jats:bold>, which had not been previously determined, has been elucidated.

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